<template>
  <div>
	 <!-- category分类导航 -->
     <div id="slider" class="mui-slider">
		<div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted">
			<div class="mui-scroll">
				<a :class="['mui-control-item', item.id === 0 ? 'mui-active' : '']" href="#item1mobile" v-for="(item, index) in categoryData" :key="index" @tap="getImages(item.id)">
					{{ item.title }}
				</a>
			</div>
		</div>
	</div>
	<!-- 图片展示部分,实现图片懒加载（导入图片懒加载插件，从mint-ui中导入） -->
	<ul class="photo-list">
		<router-link v-for="(item, index) in list" :key="index" tag="li" :to="'/home/photoInfo/' + item.id">
			<img v-lazy="item.img_url">
			<!-- 图片详情部分 -->
			<div class="info">
				<h2 class="info-title">{{ item.title }}</h2>
				<div class="info-body">
					{{ item.zhaiyao }}
				</div>
			</div>
		</router-link>
	</ul> 	
  </div>
</template>

<script>
import mui from '../../lib/mui/js/mui.js'
export default {
    data(){
        return {
			categoryData: [],
			list: []
        }
    },
    created(){
		this.getCategory(),
		this.getImages(0)
    },
    mounted(){
        mui('.mui-scroll-wrapper').scroll({
            deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
    },
    methods:{
		getCategory(){
			this.$http.get('api/getimgcategory').then(result => {
				if(result.body.status === 0) {
					result.body.message.unshift({ title: '全部', id: 0 });
					this.categoryData = result.body.message;
				}		
			})
		},
		getImages(cateId){
			this.$http.get('api/getimages/' + cateId).then(result => {
				if(result.body.status === 0) {
					this.list = result.body.message;
				}
			})
		}
    }
  
}
</script>

<style lang="less" scoped>
    * {
        touch-action: pan-y;
	}
	
	.photo-list {
		list-style: none;
		margin: 0;
		padding: 10px;
		padding-bottom: 0;
		li {
			position: relative;
			background-color: #ccc;
			box-shadow: 0 0 10px #999;
			text-align: center; 
			margin-bottom: 10px;
			img {
				width: 100%;
				vertical-align: middle;
			}
			img[lazy=loading] {
				width: 40px;
				height: 300px;
				margin: auto;
			}
			.info {
				position: absolute;
				bottom: 0;
				background-color: rgba(0, 0, 0, .4);
				color: #fff;
				max-height: 84px;
				text-align: left;
				.info-title {
					font-size: 14px;
				}
				.info-body {
					font-size: 12px;
				}
			}
		}	
	}
</style>


